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1. 发明申请

WO2008045019A2 PULSED RF HIGH PRESSURE CO2 LASERS 审中-公开
标题翻译：脉冲射频高压CO2激光器
公开(公告)号：WO2008045019A2
公开(公告)日：2008-04-17
申请号：PCT/US2006/027080
申请日：2006-07-12
申请人： COHERENT, INC. , LAUGHMAN, Lanny , SEGUIN, Vernon , CHENAUSKY, Peter, P. , HENSCHKE, Robert , MUELLER, Eric, R.
发明人： LAUGHMAN, Lanny , SEGUIN, Vernon , CHENAUSKY, Peter, P. , HENSCHKE, Robert , MUELLER, Eric, R.
CPC分类号： H01S3/2232 , H01S3/0315 , H01S3/0385 , H01S3/041 , H01S3/076 , H01S3/0975
摘要： An improved laser system includes a sealed-off, RF excited, diffusion cooled, high pressure, short pulsed, high peak power waveguide and slab CO2 laser that avoids problems typically associated with obtaining a diffused discharge at high gas pressures, without arcing and without corona, while maintaining the unsaturated gain and gas temperature experienced at low pressures and scaling to higher pressures. Such a system has a long operating life-time, and is capable of operation at high gas pressures to obtain relative fast rise and fall time pulses. The system emits relatively short pulse widths, with pulse energies up to and exceeding 30 mJ, with reasonably high pulse repetition rates. The system also has a low pulsed RF power duty cycle, thereby enabling the generation of high peak power pulses, as well as reasonable average power and reasonably high peak powers.
摘要翻译：改进的激光系统包括密封的，RF激发的，扩散冷却的，高压的，短脉冲的，高峰值功率波导和平板CO 2激光器，其避免了在高气压下获得扩散放电的问题，没有电弧和没有电晕同时保持在低压下经历的不饱和增益和气体温度，并将其缩放到较高的压力。这样的系统具有长的使用寿命，并且能够在高气体压力下操作以获得相对快速的上升和下降时间脉冲。系统发射脉冲宽度相对较短，脉冲能量可达30 mJ，脉冲重复率相当高。该系统还具有低脉冲RF功率占空比，从而能够产生高峰值功率脉冲，以及合理的平均功率和合理的高峰值功率。

2. 发明申请

WO2008103381A1 UNSTABLE RESONATOR WITH VARIABLE OUTPUT COUPLING 审中-公开
标题翻译：具有可变输出耦合的不稳定谐振器
公开(公告)号：WO2008103381A1
公开(公告)日：2008-08-28
申请号：PCT/US2008/002239
申请日：2008-02-20
申请人： COHERENT, INC. , CHENAUSKY, Peter, P. , LAUGHMAN, Lanny , MUELLER, Eric, R. , NEWMAN, Leon, A. , SEGUIN, Vernon, A. , SHACKLETON, Christian, J.
发明人： CHENAUSKY, Peter, P. , LAUGHMAN, Lanny , MUELLER, Eric, R. , NEWMAN, Leon, A. , SEGUIN, Vernon, A. , SHACKLETON, Christian, J.
IPC分类号： H01S3/081 , H01S3/223
CPC分类号： H01S3/0818 , H01S3/0315 , H01S3/2232
摘要： Through the use of a relatively inexpensive third mirror on a novel folded hybrid unstable resonator configuration, the optimum output coupling for a given laser design can be explored quickly and easily with a minimum of intracavity mirror alignment. No changes in either the radii of curvature of the three cavity optics or their spacing are required for this exploration. In addition to providing techniques for purposefully and systematically introducing mirror edge effects or avoiding edges effects altogether, the invention provides that output beams of different width can be advantageously explored in a relatively simple and straightforward manner. The invention provides that higher geometric magnification cavity designs may be made compatible with low diffraction output coupling in a configuration that uses only three totally reflecting optics.
摘要翻译：通过在新颖的折叠混合不稳定谐振器结构上使用相对便宜的第三反射镜，可以用最小的腔内反射镜对准来快速且容易地探索给定激光设计的最佳输出耦合。这种探索需要三腔光学器件的曲率半径或其间距的变化。除了提供有意和系统地引入镜面边缘效果或完全避免边缘效应的技术之外，本发明还提供了以相对简单和直接的方式有利地探索不同宽度的输出光束。本发明提供了在仅使用三个全反射光学器件的构造中，较高的几何放大空腔设计可以与低衍射输出耦合兼容。

3. 发明申请

WO2008121091A2 ELECTRO-OPTICAL MODULATOR MODULE FOR CO2 LASER Q-SWITCHING, MODE-LOCKING, AND CAVITY DUMPING 审中-公开
标题翻译：用于二氧化碳激光器的电光调制器模块Q开关，模式锁定和空气转移
公开(公告)号：WO2008121091A2
公开(公告)日：2008-10-09
申请号：PCT/US2005/020463
申请日：2005-06-09
申请人： COHERENT, INC. , LAUGHMAN, Lanny , HENNESSEY, Thomas, V., Jr. , SMUCZ, Joseph, S. , SEQUIN, Vernon, A. , MICHAUD, Raymond
发明人： LAUGHMAN, Lanny , HENNESSEY, Thomas, V., Jr. , SMUCZ, Joseph, S. , SEQUIN, Vernon, A. , MICHAUD, Raymond
CPC分类号： G02F1/0305 , G02F1/0551 , H01S3/0401 , H01S3/107 , H01S3/1103 , H01S3/115 , H01S3/2232
摘要： Various electro-optical modulator module designs are presented, which can provide for uniform, symmetric, and efficient heat removal for mode-locking, Q-switching, and/or cavity dumping operations. Heat can be uniformly extracted from an EO crystal without imposing undue stress, thereby preventing birefringence and laser beam degradation. A liquid-cooling approach can be used for high-duty operations, such as mode-locking operations. Efficient heat removal can prevent thermal run-away from electrical heating of the crystal due to the large drop in the electrical resistance of CdTe with increasing temperature when operated above 5O 0 C. RF or video arcing and subsequent damage to the EO crystal can be prevented by surrounding the crystal with a low dielectric constant material that lowers the capacitance coupling to ground, while still maintaining good thermal cooling.
摘要翻译：提出了各种电光调制器模块设计，其可以提供用于锁模，Q开关和/或空腔倾卸操作的均匀，对称和有效的散热。可以从EO晶体均匀地提取热量，而不会施加过大的应力，从而防止双折射和激光束劣化。液体冷却方法可用于高功能操作，如锁模操作。由于CdTe的电阻随温度上升超过50℃时温度的大幅下降，因此高效的除热可以防止热离开晶体的电加热。可以通过用低介电常数材料围绕晶体来防止对于EO晶体的RF或视频电弧和随后的损坏，从而降低与地耦合的电容，同时仍然保持良好的热冷却。

4. 发明申请

WO2010080650A2 COMPENSATION FOR TRANSIENT HEATING OF LASER MIRRORS 审中-公开
标题翻译：激光镜的瞬态加热补偿
公开(公告)号：WO2010080650A2
公开(公告)日：2010-07-15
申请号：PCT/US2009/069194
申请日：2009-12-22
申请人： COHERENT, INC. , PAPANIDE, Adrian , NEWMAN, Leon, A. , LAUGHMAN, Lanny
发明人： PAPANIDE, Adrian , NEWMAN, Leon, A. , LAUGHMAN, Lanny
IPC分类号： H01S3/034 , H01S3/04 , G02B7/18
CPC分类号： H01S3/0401 , H01S3/0346 , H01S3/2232
摘要： A mirror assembly for a carbon dioxide (CO2) slab laser resonator includes a center section having a rectangular cross-section and a pair of thermal balancing bars. A concave reflecting surface formed on a front edge of a center section. The side-bars are attached to either side of the center section and extend forward of the reflective surface. Dimensions of the center section and side bars are selected to position the thermal neutral plane of the assembly close to the reflective surface. This minimizes changes the radius of curvature of the reflective surface due to heating by circulating radiation in the resonator.
摘要翻译：用于二氧化碳（CO 2）板激光谐振器的反射镜组件包括具有矩形横截面的中心部分和一对热平衡棒。形成在中心部的前缘上的凹面反射面。侧杆连接到中心部分的任一侧并且延伸到反射表面的前方。选择中心部分和侧杆的尺寸以将组件的热中性面平面靠近反射表面。这使由谐振器中的循环辐射加热引起的反射表面的曲率半径的变化最小化。

5. 发明申请

WO2009017586A1 THERMAL DISTORTION COMPENSATION FOR LASER MIRRORS 审中-公开
标题翻译：激光镜的热失真补偿
公开(公告)号：WO2009017586A1
公开(公告)日：2009-02-05
申请号：PCT/US2008/008446
申请日：2008-07-10
申请人： COHERENT, INC. , NEWMAN, Leon, A. , SEQUIN, Vernon, A. , LAUGHMAN, Lanny , PAPANIDE, Adrian
发明人： NEWMAN, Leon, A. , SEQUIN, Vernon, A. , LAUGHMAN, Lanny , PAPANIDE, Adrian
IPC分类号： H01S3/08 , H01S3/034 , G02B7/18
CPC分类号： H01S3/0346 , G02B7/182 , H01S3/0401
摘要： A laser mirror assembly is disclosed with improved pointing stability. An elongated mirror includes a concave reflecting portion. A pair of elongated planar portions extend parallel to the concave reflecting portion on either side thereof. The planar portions are stepped down from the reflecting portion. The mirror is formed from copper. A pair of stainless steel strips (40) are connected to planar portions (26). The bimetallic effect between the copper mirror and the stainless steel strips (40) operates to counteract the warping of the mirror due to differential heating effects which arise during operation. In an alternate embodiment, a pair of aluminum strips are mounted on the rear surface of the mirror.
摘要翻译：公开了具有改进的指向稳定性的激光镜组件。细长的反射镜包括凹入的反射部分。一对细长的平面部分在其任一侧平行于凹面反射部分延伸。平面部分从反射部分下降。镜子由铜形成。一对不锈钢条（40）连接到平面部分（26）。铜镜和不锈钢条（40）之间的双金属效应可以抵消由于在操作过程中出现的不同的加热效应导致的镜面翘曲。在替代实施例中，一对铝条被安装在反射镜的后表面上。

6. 发明申请

WO2017079258A1 PULSE-DIVIDING METHOD AND APPARATUS FOR A PULSED CARBON MONOXIDE LASER 审中-公开
标题翻译：用于脉冲式一氧化碳激光器的脉冲分割方法和设备
公开(公告)号：WO2017079258A1
公开(公告)日：2017-05-11
申请号：PCT/US2016/060069
申请日：2016-11-02
申请人： COHERENT, INC.
发明人： HUA, Gongxue , MUELLER, Eric, R. , LAUGHMAN, Lanny , ERMOLD, Michael, Leigh
IPC分类号： B23K26/0622 , B23K26/064 , B23K26/067 , G02F1/11
CPC分类号： G02F1/33 , A45D19/0008 , A45D24/22 , A45D2019/0083 , A45D2200/058 , B23K26/0622 , B23K26/064 , B23K26/067 , B23K26/0673 , B23K26/382 , B23K2201/42 , G02F2203/26 , H01S3/0085 , H01S3/2232 , H05K3/0026 , H05K2203/107
摘要： Laser-drilling apparatus includes a gas-discharge for laser emitting laser- radiation pulses, and two acousto-optic modulators (AOMs). The laser radiation pulses are characterized as having two temporal central portions between temporal leading and trailing edge portions. The AOMs are arranged to spatially separate the central temporal portions of the pulses from each other and from the leading and trailing edge portions of the pulses.
摘要翻译：激光钻孔设备包括用于激光发射激光辐射脉冲的气体放电和两个声光调制器（AOM）。激光辐射脉冲被表征为在时间前缘部分和后缘部分之间具有两个时间中心部分。 AOM被布置为将脉冲的中央时间部分彼此以及与脉冲的前端和后端部分在空间上分开。

7. 发明申请

WO2021158396A1 RADIO-FREQUENCY EXCITED GAS LASER 审中-公开
公开(公告)号：WO2021158396A1
公开(公告)日：2021-08-12
申请号：PCT/US2021/015120
申请日：2021-01-26
申请人： COHERENT, INC.
发明人： NEWMAN, Leon A. , ERMOLD, Michael Leigh , HYLAND, James , HENNESSEY, Thomas V., Jr. , LAUGHMAN, Lanny
IPC分类号： H01S3/032 , H01S3/038 , H01S3/0971 , H01S3/07 , H01S3/081 , H01S3/223 , H01S3/03
摘要： A radio-frequency excited carbon dioxide (CO2) or carbon monoxide (CO) gas laser includes two electrodes, which have passivated surfaces, within a sealed housing. Features in a ceramic slab or a ceramic cylinder located between the electrodes define a gain volume. Surfaces of the ceramic slab or the ceramic cylinder are separated from the passivated surfaces of the electrodes by small gaps to prevent abrasion thereof. Reducing compressive forces that secure these components within the housing further reduces abrasion, thereby extending the operational lifetime of the gas laser.

8. 发明申请

WO2004038875A1 TAPERED Z-FOLDED WAVEGUIDE CO2 LASER 审中-公开
公开(公告)号：WO2004038875A1
公开(公告)日：2004-05-06
申请号：PCT/US2003/031565
申请日：2003-10-07
申请人： COHERENT, INC.
发明人： DEMARIA, Anthony, J. , SEGUIN, Vernon, A. , LAUGHMAN, Lanny
IPC分类号： H01S3/03
CPC分类号： H01S3/0315 , H01S3/08095 , H01S3/0813 , H01S3/2232
摘要： A folded waveguide CO 2 laser includes a plurality of waveguides arranged in a zigzag pattern with ends thereof overlapping. The laser includes a resonator having an axis extending through the plurality of waveguides. At least a portion of at least one of the waveguides has a uniform minimum width selected cooperative with the height of the waveguide and the laser wavelength such that the resonator can oscillate in only a single mode. At least a portion of one of the waveguides is tapered such that its width increases in one direction along the resonator axis. Tapering one or more of the waveguides provides that the total waveguide area and potential power output of the laser is greater than that of a zigzag arrangement of waveguides having the same total length waveguides each having a uniform width equal to the minimum width of the waveguide in the tapered waveguide arrangement.
摘要翻译：折叠波导CO 2激光器包括以Z字形图案布置的多个波导，其端部重叠。激光器包括具有延伸穿过多个波导的轴的谐振器。至少一个波导的至少一部分具有与波导的高度和激光波长的选择协调的均匀的最小宽度，使得谐振器可以仅在单个模式下振荡。波导中的一个的至少一部分是锥形的，使得其宽度沿着谐振器轴在一个方向上增加。锥形一个或多个波导提供了激光器的总波导面积和潜在功率输出大于具有相同总长波导的波形的Z字形布置的波导的均匀布置，每个波导具有等于波导的最小宽度的均匀宽度锥形波导装置。

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